SSF is a Sega Saturn emulator for Windows systems using DirectX 9.0b. The current version claims near-complete implementation of the Sega Saturn hardware (not counting emulation bugs), and can emulate the Saturn based Sega Titan Video arcade hardware too. As with most emulators, CDs or disc images are not included and have to be owned separately. The BIOS is also not included; as of 0.07 Beta R3, games run without the BIOS however. The usage of BIOS files is optional but recommended for better compatibility, and needed for tasks such as management of the contents of the internal memory of the Sega Saturn, or setting the system clock.

SSF Changelog:

The problem of runaway is corrected when the CD image of MultiFile (MultiTrack) is specified
Also, even if you insert a game CD of a different model, it will not run out of control.